During the installation of a Composi-Sleeve™, the entire inner surface of the steel repair sleeves are permanently bonded (fused) to the outer surface of the pipeline, creating a 100% chemical weld. Traditional mechanical welding only bonds the edges of the repair sleeve to the pipeline, effectively creating a capsule to contain the pressure. This method has less than 10% metal-to-metal bonding.
Additionally, engineering testing and analysis concludes that by reducing the stress level in the repair region, defect growth and/or continued deterioration is arrested (or eliminated). And, "Chemical Welding" is a much more effective bond that distributes stresses and does not affect the grain structure.
Composi-Sleeve™ has had all testing was performed on a third party bases with Stress Engineering Services (SES) in Houston, Texas. The tests included load bearing testing, axial testing, cyclic fatigue, vintage weld, leak-test, strain gauge analysis and a burst test. See "Results" section for copies of the SES testing documents.
Additionally, Western Specialties has performed its own long term testing over the eight years of development. In October 2015, Western Specialties dug up a Composi-Sleeve™ that was installed in July 2011 in Hermiston, Oregon to examine its condition and long-term material performance. After almost 5 years in service, the repair system integrity was determined to be "as good as new!"
Composi-Sleeve™ is a patented pipeline repair solution.
Repair Apparatus & Method for Pipe & Fittings
U.S. Patent #7,938,146 B2
Repair Apparatus & Method
U.S. Patent #8,424,571S
Composi-Sleeve™ works. It is a D.O.T. compliant solution, is an ASME PCC-2 sanctioned solution, it meets PHMSA requirements/standards, it is considered a permanent repair and it keeps the pipeline in service while in repair.
Composi-Sleeve™ is supported by a world class team. Western Specialties is the Composi-Sleeve™ solution creator, developer and manufacturer. LMC Industrial Contractors is the manufacturer and supplier of the steel sleeves. The LORD Corporation is the creator, developer, manufacturer and supplier of the chemical welding agents. Primoris Services Corporation, and their family of operating companies, is the trained and certified service agents/applicators of Composi-Sleeve™ pipeline repair system and projects.
Additionally, in some cases Western Specialties and/or other pipeline repair contractor(s) may be used as the certified service agents/applicators of Composi-Sleeve™ pipeline repair system and projects. Generally speaking, each repair situation is dictated by the requirements of the pipeline operator.